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sqltreat
answered Oct 8 '21 00:00
time()
By using time() function in PHP
time() return current timestamp and by subtract any number of days to it lead to time of before n(any number) days
for example :
subtract 1 days to the current date.
date('Y-m-d',time()-3600*24*1);
so here we are converting first given days to second by multiplying it with 3600*24 where (60 minute * 60 second)3600 second * 24 hour
in short 1 day is equal to 60 seconds per minute, 60 minutes per hour and 24 hours per day: 60*60*24 multiply with number of days you want to subtract and minus it from the current time
subtract 2 days to the current date.
date('Y-m-d',time()-3600*24*2);
subtract 3 days to the current date.
date('Y-m-d',time()-3600*24*3);
strtotime()
By using strtotime() function in php
strtotime() function convert string to time .
subtract 1 days to the current date.
date('Y-m-d',strtotime("-1 days"));
subtract 2 days to the current date.
date('Y-m-d',strtotime("-2 days"));
subtract 3 days to the current date.
date('Y-m-d',strtotime("-3 days"));
subtract 1 days to any date.
date('Y-m-d',strtotime("2021-10-19 -1 days"));
subtract 2 days on any date.
date('Y-m-d',strtotime("2021-10-19 -2 days"));
subtract 3 days to any date.
date('Y-m-d',strtotime("2021-10-19 -3 days"));